I e-mailed Google support about this and they said:

"This is the new favicon for the Google Apps Admin Console. It is definitely nothing to worry about. It is currently being displayed for some users in Gmail as well. This is not intended. This issue is currently being worked on and will be resolved as soon as possible. Please be aware that this is a cosmetic issue and will not affect your email in any way."

The content of this field is kept private and will not be shown publicly.
About text formats

Plain text

  • No HTML tags allowed.
  • Lines and paragraphs break automatically.
  • Web page addresses and email addresses turn into links automatically.
CAPTCHA
This question is for testing whether or not you are a human visitor and to prevent automated spam submissions.